An18.9 min blue large-amplitude pulsator crossing the 'Hertzsprung gap' of hot subdwarfs | |
Lin, Jie17; Wu CY(吴程远)2,17; Wang, Xiaofeng16,17; Németh, Péter14,15; Xiong HR(熊赫然)1,2; Wu T(吴涛)2,10,11,12,13; Filippenko, Alexei V.9; Cai, Yongzhi17; Brink, Thomas G.9; Yan, Shengyu17 | |
刊名 | NATURE ASTRONOMY |
2022-09-29 | |
ISSN号 | 2397-3366 |
DOI | 10.1038/s41550-022-01783-z |
产权排序 | 第16完成单位 |
文献子类 | Article; Early Access |
英文摘要 | Blue large-amplitude pulsators (BLAPs) represent a new and rare class of hot pulsating stars with unusually large amplitudes and short periods. The evolutionary path that could give rise to such kinds of stellar configurations is unclear. Here we report a comprehensive study ofthe peculiar BLAP discovered by the Tsinghua University-Ma Huateng Telescopes for Survey (TMTS), namely, TMTSJ035143.63+584,504.2 (TMTS-BLAP-1). This new BLAP has an 18.9 min pulsation period and is similar to the BLAPs with a low surface gravity and extended helium-enriched envelope, suggesting that it is a low-gravity BLAP at the shortest-period end. In particular, the long-term monitoring data reveal that this pulsating star has an unusually large rate of period change, namely, (P) over dot/P = 2.2 x 10(-6) yr(-1). Such a significant and positive value challenges its origins from both helium-core pre-white-dwarfs and core helium-burning subdwarfs, but is consistent with that derived from shell helium-burning subdwarfs. The particular pulsation period and unusual rate of period change indicate that TMTS-BLAP-1 is at a short-lived (similar to 10(6) yr) phase of shell helium ignition before the stable shell helium burning; in other words, TMTS-BLAP-1 is going through a 'Hertzsprung gap' of hot subdwarfs. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY |
资助项目 | National Science Foundation of China (NSFC)[12033003] ; National Science Foundation of China (NSFC)[11633002] ; Ma Huateng Foundation ; Scholar Program of Beijing Academy of Science and Technology[DZ:BS202002] ; Tencent Xplorer Prize ; National Natural Science Foundation of China (NSFC)[12003013] ; Grant Agency of the Czech Republic[GACR 22-34467S] ; Polish National Science Centre[UMO-2017/26/E/ST9/00703] ; Polish National Science Centre[UMO-2017/25/B/ST9/02218] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; National Key R&D Program of China[2021YFA1600402] ; NSFC of China[11873084] ; NSFC of China[12133011] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents ; Miller Institute for Basic Research in Science ; Christopher R. Redlich Fund ; China Postdoctoral Science Foundation[2021M691821] ; W. M. Keck Foundation ; NASA[NN12AR55G] ; NASA[80NSSC18K0284] ; NASA[80NSSC18K1575] ; Kepler/K2 grant[J1944/80NSSC19K0112] ; Kepler/K2 grant[HST GO-15889] ; STFC[ST/T000198/1] ; STFC[ST/S006109/1] ; US National Science Foundation[AST-1440341] ; US National Science Foundation[AST-2034437] ; Caltech ; IPAC ; Weizmann Institute for Science ; Oskar Klein Center at Stockholm University ; University of Maryland ; University of Washington ; Deutsches Elektronen-Synchrotron and Humboldt University ; Los Alamos National Laboratories ; TANGO Consortium of Taiwan ; University of Wisconsin at Milwaukee ; Trinity College Dublin ; Lawrence Livermore National Laboratories ; Lawrence Berkeley National Laboratory ; IN2P3 (France) ; [RVO:67985815] |
WOS关键词 | B-STARS ; EVOLUTIONARY STATUS ; DRIVING MECHANISM |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATURE PORTFOLIO |
WOS记录号 | WOS:000863153200002 |
资助机构 | National Science Foundation of China (NSFC)[12033003, 11633002] ; Ma Huateng Foundation ; Scholar Program of Beijing Academy of Science and Technology[DZ:BS202002] ; Tencent Xplorer Prize ; National Natural Science Foundation of China (NSFC)[12003013] ; Grant Agency of the Czech Republic[GACR 22-34467S] ; Polish National Science Centre[UMO-2017/26/E/ST9/00703, UMO-2017/25/B/ST9/02218] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; National Key R&D Program of China[2021YFA1600402] ; NSFC of China[11873084, 12133011] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents ; Miller Institute for Basic Research in Science ; Christopher R. Redlich Fund ; China Postdoctoral Science Foundation[2021M691821] ; W. M. Keck Foundation ; NASA[NN12AR55G, 80NSSC18K0284, 80NSSC18K1575] ; Kepler/K2 grant[J1944/80NSSC19K0112, HST GO-15889] ; STFC[ST/T000198/1, ST/S006109/1] ; US National Science Foundation[AST-1440341, AST-2034437] ; Caltech ; IPAC ; Weizmann Institute for Science ; Oskar Klein Center at Stockholm University ; University of Maryland ; University of Washington ; Deutsches Elektronen-Synchrotron and Humboldt University ; Los Alamos National Laboratories ; TANGO Consortium of Taiwan ; University of Wisconsin at Milwaukee ; Trinity College Dublin ; Lawrence Livermore National Laboratories ; Lawrence Berkeley National Laboratory ; IN2P3 (France) ; [RVO:67985815] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25590] |
专题 | 云南天文台_大样本恒星演化研究组 |
通讯作者 | Wang, Xiaofeng |
作者单位 | 1.Research School of Astronomy & Astrophysics, Australian National University, Canberra, Australia; 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming, People's Republic of China 3.The School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel 4.National Astronomical Observatories of China, Chinese Academy of Sciences, Beijing, People’s Republic of China; 5.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, People’s Republic of China; 6.Department of Astronomy, Beijing Normal University, Beijing, People’s Republic of China; 7.Department of Astronomy, China West Normal University, Nanchong, People’s Republic of China; 8.Center for Astronomy and Space Sciences, China Three Gorges University, Yichang, People’s Republic of China; 9.Department of Astronomy, University of California, Berkeley, USA; 10.Institute of Theoretical Physics, Shanxi University, Taiyuan, People’s Republic of China; |
推荐引用方式 GB/T 7714 | Lin, Jie,Wu CY,Wang, Xiaofeng,et al. An18.9 min blue large-amplitude pulsator crossing the 'Hertzsprung gap' of hot subdwarfs[J]. NATURE ASTRONOMY,2022. |
APA | Lin, Jie.,Wu CY.,Wang, Xiaofeng.,Németh, Péter.,Xiong HR.,...&Zhang, Xinghan.(2022).An18.9 min blue large-amplitude pulsator crossing the 'Hertzsprung gap' of hot subdwarfs.NATURE ASTRONOMY. |
MLA | Lin, Jie,et al."An18.9 min blue large-amplitude pulsator crossing the 'Hertzsprung gap' of hot subdwarfs".NATURE ASTRONOMY (2022). |
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